<!doctype html>
<html lang="zh-CN">
<head>
    <meta charset="utf8">
    <title>super canvas</title>
    <style>
        body {
            margin: 0;
            padding: 0;
            background: #000;
            /*overflow:hidden;*/
            font-size: 0;
        }

        #canvas {
            cursor: pointer;
            position: absolute;
            left: 0;
            top: 0 ;
        }
    </style>
</head>
<body>
<canvas id="canvas"></canvas>
<script src="main.js"></script>
</body>
</html>